Reflex arcs in which the sensory stimulus and the motor response occur on the same side of the body are:
(a) Contralateral
(b) Paraesthetic
c) Ipsilateral
(d) Monosynaptic.

A reflex arc is a neural pathway that controls a reflex action. It typically involves a sensory neuron that detects a stimulus, an interneuron that processes the information, and a motor neuron that triggers a response. Reflex arcs can be classified based on the location of the sensory and motor neurons relative to the spinal cord.

An ipsilateral response occurs when both the sensory input and the motor output are on the same side of the body. This means that the stimulus detected by a sensory neuron on one side leads to a motor response from a motor neuron on the same side, facilitating quick reactions without involving the opposite side of the body.

A contralateral response involves sensory input and motor output occurring on opposite sides of the body. In this case, a stimulus detected by a sensory neuron on one side results in a motor response from a neuron on the opposite side, often seen in more complex reflexes and coordinated movements.